Article Per Year (5 Year)
p-Index From 2021 - 2026
0.882
P-Index
This Author published in this journals
All Journal IPTEK The Journal of Engineering Indonesian Community Journal Sewagati
Aulia, Anisa Fatma
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Languange, Linguistic, Communication & Media Mechanical Engineering Public Health Social Sciences Other

Published : 5 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search
Journal : iptek the journal of engineering

 1 
Application of Electrocoagulation in Stabilizing pH and Removing Pollutants from Domestic and Urban Wastewater Using Aluminum Electrodes Kaloka, Ardista Izdhihar; Faizah, Nurul; Arifin, Rizal; Aulia, Anisa Fatma; Putra, Muhammad Benaldo Anugrah; Wati, Ni’mah; Prayadi, Icha Nur
IPTEK The Journal of Engineering Vol. 11 No. 2 (2025)
Publisher : Pusat Publikasi Ilmiah, Institut Teknologi Sepuluh Nopember.

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study investigates the application of electrocoagulation using aluminum electrodes to stabilize pH and remove pollutants from various real wastewater sources in Surabaya, Indonesia, including laundromats, fast food restaurants, campus canteens, mechanical workshops, and tofu industries. A batch-mode electrocoagulation process was conducted using 10 A of current over 60 minutes, and the performance was evaluated based on pH changes, turbidity, and Total Suspended Solids (TSS) removal. The highest TSS removal efficiency of 98% was observed in machine shop wastewater, while laundromat samples also achieved high performance with 97% reduction. Electrocoagulation demonstrated strong pH stability in effluents with buffering compounds such as those from campus canteens and workshops, whereas fluctuating pH and turbidity levels were found in tofu and fast-food effluents, indicating the need for process optimization. Turbidity decreased significantly across all samples, confirming effective floc formation during electrolysis. The findings confirm that electrocoagulation is a promising method for treating both domestic and urban wastewater. However, integrating additional processes such as adsorption or filtration is recommended to enhance performance for complex wastewater compositions and ensure compliance with discharge standards.
Effect of Inhibitor Addition, pH, and Current Density on the Corrosion Rate of Fe Metals Aulia, Anisa Fatma; Faizah, Nurul; Arifin, Rizal; Kaloka, Ardista Izdhihar; Thufailah, Gladys Sukma
IPTEK The Journal of Engineering Vol. 11 No. 2 (2025)
Publisher : Pusat Publikasi Ilmiah, Institut Teknologi Sepuluh Nopember.

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Corrosion significantly impacts public safety and the economy, causing substantial financial losses, infrastructure damage, and hazardous incidents across various industries. Researchers investigated the effects of pH, current density, and corrosion inhibitors (potassium chromate and potassium nitrate) on iron corrosion by measuring weight loss of iron samples immersed in sulfuric acid over time. The addition of inhibitors showed that KNO3 was more effective in reducing the corrosion rate, with values of 4.992068, 3.744051, 2.736034, 1.728017, and 0.608008 mils per year, compared to K2CrO4, which resulted in 9.728132, 7.296099, 5.472066, 3.648033, and 1.216017 mils per year. Corrosion rate increased as pH decreased, with Fe showing corrosion at pH 6.21, 5.18, 4.26, 3.85, and 3.22. The relationship between current density and corrosion rate was found to be proportional, with voltage values of 1.31, 2.24, 3.16, 5.11, and 7.1 amperes per square meter (A/m^2). This study confirms that inhibitor type, acidity (pH), and current density significantly influence corrosion behavior, where increasing pH and current density can accelerate corrosion, and potassium nitrate (KNO3) demonstrates superior corrosion inhibition compared to potassium chromate (K2CrO4).
Effect of Flow Rate NaOH on CO2 Absorption Efficiency Using a Column Tray Absorber Arifin, Rizal; Faizah, Nurul; Kaloka, Ardista Izdhihar; Aulia, Anisa Fatma; Thufailah, Gladys Sukma; Syukur, Muhammad Adnan
IPTEK The Journal of Engineering Vol. 11 No. 1 (2025)
Publisher : Pusat Publikasi Ilmiah, Institut Teknologi Sepuluh Nopember.

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

CO2 in industrial gas streams reduces process efficiency, corrodes equipment, and affects product quality. Additionally, CO2 emissions contribute to climate change and global warming. To mitigate these effects, CO2 removal through absorption is essential. Absorption involves contacting a gas mixture with a liquid absorbent to dissolve the gas component. This study examines the effect of CO2 flow rate (V) and NaOH flow rate (L) on CO2 absorption efficiency. The experiment involved preparing 33 liters of 0.1 normal NaOH and 250 milliliters of 0.1 normal HCl, followed by solution standardization using methyl orange. CO2 was introduced through valve V-4 while NaOH was pumped into the absorption column. Samples were taken after steady state was reached, and titration with 0.1 normal HCl determined residual NaOH concentration. Flow rate variations of 1, 3, 5, 7, and 9 liters per minute were tested. Results align with literature, indicating that as CO2 flow rate increases, NaOH flow rate also rises. However, the L/V ratio and absorbed CO2 amount decrease due to reduced contact time, lowering absorption efficiency. This study highlights the importance of optimizing flow rates to enhance CO2 capture.
Co-Authors Adi Soeprijanto Afan Hamzah, Afan Ali Altway Alkamalia, Andini Nabila Arifin, Rizal Kaloka, Ardista Izdhihar Lailatul Qomariyah, Lailatul Lily Pudjiastuti, Lily Niniek Fajar Puspita, Niniek Fajar Nurlaili Humaidah, Nurlaili NURUL FAIZAH Prayadi, Icha Nur Putra, Muhammad Benaldo Anugrah Suprapto Suprapto Syukur, Muhammad Adnan Thufailah, Gladys Sukma Trisanti, Warlinda Eka Wati, Ni’mah Zuchrillah, Daril Ridho